how do I limit "findprinters" output to actual printers on Windows

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Jan Keij 2020-6-23

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https://ww2.mathworks.cn/matlabcentral/answers/553435-how-do-i-limit-findprinters-output-to-actual-printers-on-windows

For a to-be deployed program, I need to build a list of available printers. Using [~, p] = findprinters; on my Windows box, yields 'OneNote for Windows 10', 'Microsoft XPS Document Writer', 'Microsoft Print to PDF', 'HP ENVY 4520 series', and 'Fax'. To remove the non-printers, I used the follwing code, and that did the trick:

forbidden_fruits = {'OneNote', 'Microsoft', 'Fax'};

for n = length(p):-1:1, if contains(p{n}, forbidden_fruits), p(n) = []; end, end

However, recently I downloaded a pdf reader, and now Matlab also finds 'PDF-XChange Lite' among the available printers. I added 'PDF' to the forbidden_fruits, but clearly my filtering will fail in the future as I have no control of what the end users have on their PC.

Is there a more printer-specific command or printer filter, as in a way to 'ping' each "printer" to confirm it is an actual printer.

Thanks.